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MASTER-TROL

MASTER-TROL is a brand of water management systems engineered for institutional and correctional facility plumbing applications. The product line centers on retrofit kits that convert or upgrade existing combination units—integrated toilet, sink, and shower assemblies—into electronically controlled, communicating systems. These kits are designed for penal and institutional environments where fixture control, vandal resistance, and centralized water management are operational requirements. The MASTER-TROL Penal System series includes dedicated retrofit kits for toilets, sinks, showers, and combination units, each configured to interface with existing wall supply and drain rough-ins. Key components across the line include electronic solenoid-operated flush valves, pneumatic push rod assemblies for thick-wall installations, transformers, bubbler adapters, and tubing for pneumatic push buttons. Configuration style is communicating, meaning the fixtures operate as part of a networked control scheme rather than as standalone mechanical valves. Main module overall height is commonly 9 7/8 inches, a dimension that allows the control module to fit within standard institutional chase or wall cavity depths. The retrofit kits are specified by fixture type and wall condition—for example, models with pneumatic push rod assemblies sized for 8-inch walls—so specifiers can match the kit to the existing infrastructure without replacing the entire fixture. 3G Electric supplies the MASTER-TROL line as part of its industrial and institutional equipment catalog. The product range available includes the EZ-MTP-ST-SH shower retrofit kit with bubbler adapters, the EZ-MTP-WC toilet retrofit kit with wall supply electronic solenoid flush valve, the EZ-MTP-WC-2 toilet kit with two pneumatic push rod assemblies for 8-inch walls, the EZ-MTP-LTC-2 and EZ-MTP-LTC-4 combination unit retrofit kits with transformer, the EZ-MTP-ST-LV sink retrofit kit with pneumatic push button tubing, and the EZ-MTP-WCL and EZ-MTP-WCL-2 toilet and sink retrofit kits with flush valve branch assembly or bubbler adapters. These kits are intended for maintenance and capital projects where existing institutional fixtures require control upgrades or replacement of obsolete water management components. 3G Electric supports the line with part-number-level identification, specification matching, and logistics coordination for buyers specifying or maintaining correctional and institutional plumbing systems. The catalog entries include manufacturer part numbers, included components, and configuration details to assist procurement and maintenance teams in selecting the correct retrofit kit for the fixture type and wall condition. For plant engineers and maintenance managers, the relevant selection criteria are fixture type (toilet, sink, shower, or combination), wall thickness where pneumatic push rods are used, and whether the existing system requires a transformer or flush valve branch assembly. The communicating configuration implies that these kits are part of a broader control architecture, so compatibility with existing control panels or communication protocols should be verified against project documentation. 3G Electric provides the MASTER-TROL line as a cataloged offering with global shipping, allowing institutional and correctional facility projects to source replacement or retrofit components through a single distribution channel.

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About MASTER-TROL

MASTER-TROL is a brand of water management systems engineered for institutional and correctional facility plumbing applications. The product line centers on retrofit kits that convert or upgrade existing combination units—integrated toilet, sink, and shower assemblies—into electronically controlled, communicating systems. These kits are designed for penal and institutional environments where fixture control, vandal resistance, and centralized water management are operational requirements. The MASTER-TROL Penal System series includes dedicated retrofit kits for toilets, sinks, showers, and combination units, each configured to interface with existing wall supply and drain rough-ins. Key components across the line include electronic solenoid-operated flush valves, pneumatic push rod assemblies for thick-wall installations, transformers, bubbler adapters, and tubing for pneumatic push buttons. Configuration style is communicating, meaning the fixtures operate as part of a networked control scheme rather than as standalone mechanical valves. Main module overall height is commonly 9 7/8 inches, a dimension that allows the control module to fit within standard institutional chase or wall cavity depths. The retrofit kits are specified by fixture type and wall condition—for example, models with pneumatic push rod assemblies sized for 8-inch walls—so specifiers can match the kit to the existing infrastructure without replacing the entire fixture. 3G Electric supplies the MASTER-TROL line as part of its industrial and institutional equipment catalog. The product range available includes the EZ-MTP-ST-SH shower retrofit kit with bubbler adapters, the EZ-MTP-WC toilet retrofit kit with wall supply electronic solenoid flush valve, the EZ-MTP-WC-2 toilet kit with two pneumatic push rod assemblies for 8-inch walls, the EZ-MTP-LTC-2 and EZ-MTP-LTC-4 combination unit retrofit kits with transformer, the EZ-MTP-ST-LV sink retrofit kit with pneumatic push button tubing, and the EZ-MTP-WCL and EZ-MTP-WCL-2 toilet and sink retrofit kits with flush valve branch assembly or bubbler adapters. These kits are intended for maintenance and capital projects where existing institutional fixtures require control upgrades or replacement of obsolete water management components. 3G Electric supports the line with part-number-level identification, specification matching, and logistics coordination for buyers specifying or maintaining correctional and institutional plumbing systems. The catalog entries include manufacturer part numbers, included components, and configuration details to assist procurement and maintenance teams in selecting the correct retrofit kit for the fixture type and wall condition. For plant engineers and maintenance managers, the relevant selection criteria are fixture type (toilet, sink, shower, or combination), wall thickness where pneumatic push rods are used, and whether the existing system requires a transformer or flush valve branch assembly. The communicating configuration implies that these kits are part of a broader control architecture, so compatibility with existing control panels or communication protocols should be verified against project documentation. 3G Electric provides the MASTER-TROL line as a cataloged offering with global shipping, allowing institutional and correctional facility projects to source replacement or retrofit components through a single distribution channel.

Common Applications

  • Correctional facility shower upgrades — MASTER-TROL EZ-MTP-ST-SH shower retrofit kit with bubbler adapters for institutional combination units
  • Prison toilet replacement projects — MASTER-TROL EZ-MTP-WC toilet retrofit kit with wall supply electronic solenoid flush valve
  • Thick-wall penal toilet installations — MASTER-TROL EZ-MTP-WC-2 toilet retrofit kit with two pneumatic push rod assemblies for 8-inch walls
  • Institutional combination unit retrofits — MASTER-TROL EZ-MTP-LTC-2 or EZ-MTP-LTC-4 combination unit retrofit kit with transformer
  • Correctional sink control upgrades — MASTER-TROL EZ-MTP-ST-LV sink retrofit kit with tubing for pneumatic push buttons
  • Combined toilet and sink fixture retrofits — MASTER-TROL EZ-MTP-WCL or EZ-MTP-WCL-2 toilet and sink retrofit kit with flush valve branch assembly or bubbler adapters

Frequently asked questions

Common questions about MASTER-TROL from 3G Electric.

What is the difference between the MASTER-TROL EZ-MTP-WC and EZ-MTP-WC-2 toilet retrofit kits?

The EZ-MTP-WC includes a wall supply electronic solenoid operated flush valve. The EZ-MTP-WC-2 includes two flushing air-control pneumatic push rod assemblies for 8-inch walls. Both are communicating prison toilet retrofit kits for institutional combination units. The choice depends on the existing flush actuation method and wall thickness: the WC model suits electronic solenoid flush control, while the WC-2 model suits pneumatic push rod actuation in thick-wall installations. Verify the existing rough-in and control scheme before specifying.

Which MASTER-TROL retrofit kit includes a transformer?

The EZ-MTP-LTC-2 and EZ-MTP-LTC-4 combination unit retrofit kits include a transformer. These are communicating water management systems for institutional combination units, with a main module overall height of 9 7/8 inches. The transformer is part of the kit to provide the required low-voltage power for the control module. If the existing unit does not have a compatible power supply, these kits include the necessary transformer. Confirm voltage and control compatibility with the facility's electrical and control specifications.

What components are included in the MASTER-TROL EZ-MTP-ST-SH shower retrofit kit?

The EZ-MTP-ST-SH is a prison shower retrofit kit for institutional combination units. It includes bubbler adapters and is configured as a communicating system. The kit is designed to retrofit existing shower fixtures in correctional facilities. The bubbler adapters are included to interface with the existing bubbler or drinking fountain component where present. The main module dimensions and control interface should be verified against the existing unit. This kit does not include a flush valve or transformer; those are separate components in other MASTER-TROL kits.

What is the main module overall height for MASTER-TROL Penal System retrofit kits?

Several MASTER-TROL Penal System retrofit kits have a main module overall height of 9 7/8 inches. This dimension applies to models such as EZ-MTP-LTC-2, EZ-MTP-LTC-4, EZ-MTP-WCL, and EZ-MTP-WCL-2. The height is relevant for installation within existing wall cavities or chases in institutional combination units. Verify the available depth in the existing fixture before ordering, as site conditions may vary. The 9 7/8 inch dimension is a nominal specification and should be confirmed against the project's rough-in drawings.

What is the difference between the MASTER-TROL EZ-MTP-WCL and EZ-MTP-WCL-2 toilet and sink retrofit kits?

Both are communicating prison toilet and sink retrofit kits for institutional combination units with a 9 7/8 inch main module overall height. The EZ-MTP-WCL includes an MTPFV flush valve branch assembly. The EZ-MTP-WCL-2 includes adequate bubbler adapters. The selection depends on whether the existing unit requires a flush valve branch assembly or bubbler adapters. Both kits are designed for retrofitting combined toilet and sink fixtures in correctional facilities. Confirm the existing fixture configuration and water supply arrangement before specifying.

Does the MASTER-TROL EZ-MTP-ST-LV sink retrofit kit include pneumatic push button tubing?

Yes, the EZ-MTP-ST-LV sink retrofit kit includes tubing for pneumatic push buttons. It is a communicating prison sink retrofit kit for institutional combination units, with a main module overall height of 9 7/8 inches. The tubing allows connection to pneumatic push button actuators, which are common in correctional facilities for vandal-resistant fixture control. The kit does not include the push buttons themselves unless otherwise specified. Verify the existing actuation method and tubing routing requirements before installation.